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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKinetic Theory of Gases and Gas LawsMedium2 minQB

PhysicsMediumnumerical

Assume air at the surface is at 1 atm and 273 K with uniform T and $M = 0.029 kg / mol$ . Find the pressure in atm 3 km above the surface (two decimals).

Answer:

0.69

Solution:

$P = P_{0} e^{- \frac{M g h}{RT}} = exp (- \frac{0.029 \times 9.8 \times 3000}{8.314 \times 273}) = e^{- 0.3756} = 0.69$

atm. At 3 km below the surface the pressure would be 1.46 atm.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Kinetic Theory of Gases and Gas Laws

⏱ 2mℹ️ Source: QB

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